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SN54AS240A Datasheet(PDF) 4 Page - Texas Instruments |
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SN54AS240A Datasheet(HTML) 4 Page - Texas Instruments |
4 / 21 page SN54ALS240A, SN54AS240A, SN74ALS240A, SN74AS240A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS214E – DECEMBER 1982 – REVISED AUGUST 2002 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 V VIH High-level input voltage 2 V VIL Low level input voltage SN54ALS240A 0.7 V VIL Low-level input voltage SN74ALS240A, ’AS240A 0.8 V IOH High level output current SN54ALS240A, SN54AS240A – 12 mA IOH High-level output current SN74ALS240A, SN74AS240A – 15 mA SN54ALS240A 12 SN74ALS240A 24 IOL Low-level output current SN74ALS240A 48† mA SN54AS240A 48 SN74AS240A 64 TA Operating free-air temperature SN54ALS240A, SN54AS240A – 55 125 °C TA O erating free-air tem erature SN74ALS240A, SN74AS240A 0 70 °C † Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54ALS240A SN74ALS240A UNIT PARAMETER TEST CONDITIONS MIN TYP‡ MAX MIN TYP‡ MAX UNIT VIK VCC = 4.5 V, II = – 18 mA – 1.2 – 1.2 V VCC = 4.5 V to 5.5 V, IOH = – 0.4 mA VCC – 2 VCC – 2 VOH IOH = – 3 mA 2.4 3.2 2.4 3.2 V VOH VCC = 4.5 V IOH = – 12 mA 2 V IOH = – 15 mA 2 IOL = 12 mA 0.25 0.4 0.25 0.4 VOL VCC = 4.5 V IOL = 24 mA 0.35 0.5 V IOL = 48 mA† 0.35 0.5 IOZH VCC = 5.5 V, VO = 2.7 V 20 20 µA IOZL VCC = 5.5 V, VO = 0.4 V – 20 – 20 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL VCC = 5.5 V, VI = 0.4 V – 0.1 – 0.1 mA IO§ VCC = 5.5 V, VO = 2.25 V – 20 – 112 – 30 – 112 mA Outputs high 4 11 4 11 ICC VCC = 5.5 V Outputs low 13 23 13 23 mA Outputs disabled 14 25 14 25 † Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V ‡ All typical values are at VCC = 5 V, TA = 25°C. § The output conditions have been chosen to produce a current that closely approximates one-half of the true short-circuit output current, IOS. |
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